Check to see if there are any Corruption/Crimson blocks nearby. It is possible that is impacting your house. Corruption/Crimson can't spread through snow blocks, but it can spread through ice blocks. It is possible there is Corruption/Crimson nearby that location and the ice blocks nearby have been corrupted.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.